$ python .waf-1.1.1-1293590041/wafadmin/preproc.py src/mainwindow.cc
warning: line parsing failed >if GTK_VERSION_GE(2,10)<
Traceback (most recent call last):
  File ".waf-1.1.1-1293590041/wafadmin/preproc.py", line 896, in <module>
    gruik.start(arg)
  File ".waf-1.1.1-1293590041/wafadmin/preproc.py", line 608, in start
    self.process_line()
  File ".waf-1.1.1-1293590041/wafadmin/preproc.py", line 661, in process_line
    ret = self.comp(self.get_body())
  File ".waf-1.1.1-1293590041/wafadmin/preproc.py", line 883, in comp
    res = comp(clean)
  File ".waf-1.1.1-1293590041/wafadmin/preproc.py", line 318, in comp
    raise ValueError, "could not parse the macro %s " % str(lst)
ValueError: could not parse the macro [['ident', 'GTK_VERSION_GE'], ['operator', '('], ['number', '2'], ['operator', ','], ['number', '10'], ['operator', ')']] 

The code that triggers this:

#if GTK_VERSION_GE(2,10)
  view->main_treeview->set_enable_tree_lines(true);
#endif